Furnace grate



A ril 13,1926; 1,580,330

, K. REZSNY FURNACE GRATE Filed July 9. 1925 K Rezsn INVEWI'UR PatentedApr. 13 1926.

UNITED i STATES PATENrr- F we g mma aEzsNY, or BUDAPEST, HUNGAR FURNACEGBATE.

Tom w hom it may concern:

Be it known that I, a citizen of Hungary, and residing at Budapest, 11,Hungary, have invented certain new and useful Improvements in andRelating to Furnace Grates, of specification.

This invention relatesto furnace" grates for fire boxes or fiues oflocomotive-boilers of the kind in which stationary side portions areused in combination with a tiltable portion, the centre of gravity ofwhich latter portion is eccentric with respect 'to its axis of rotation,and in whichno mechanical gear is required fortlpping thesaid movablepart of the grate into the open position for the removal of theclinkerand then again into its closed position the usual fire'hook beingsutficient for this purpose;

Furnace gratesofthe kind above referred to as hitherto constructed (seefor instance Rezsnys Patent 1503767) have various drawbacks. Thus, thefire-bars are liable to break when striking against the stationarysupport or abutment during a violent closure; when use is made of coalcontaining tar the movable and stationary parts may cake together at thesupporting points and thereby render the upward tilting of the tiltableportion of the grate more diliicultv and even prevent it altogether; theopened portions of the grate rest against the stationary parts thereofat an acute angle whereby a dead space is produced; the lifting of thearm of the tiltable portion is rendered diflicult by the weight of theclinker when the quantity of the residues is very large; the tilted armprojects into the fire box and interferes with the manipulation of thefire, etc.

The object of the present invention is to provide a construction inwhich these drawbacks are avoided.

The main feature of the invention consists in this that the weight ofthe tiltable portion or portions of the grate is so distributed withrespect to the axis of rotation that for the opening operation a smallmovement wil suflice to cause the centre of gravity to shift from theone to the other side of the axis of rotation and automatically completethe opening.

Another feature of the inventionconsists in this that'the axis ofrotation of the tilt: able portion of the grate is arranged to lie belowthe centre of gravity of the same.

The invention also-consists in limiting the Application filed July 9,1925.

KoLo vrAN REzsNr,

which the following is a H long are.

' Referring to Figs. which illustrate in plan; view respectivelyfa'gratewith two tiltable portions, 1 is a stationary part of Serial No. 42,558.

grate when'opemby' a rod, such'a rod being preferably used position ofthe said grate when closed.

still further feature of theinvention end position of the tiltableportion of the also for limiting the end consists. in constructing thetiltable portion of'the grate'preferably in the form or. an

are so that during the opening operationthe same essentially performs asliding move.

ment with respect .to

The invention also those'inside surfacesof the stationary grate whichface the tiltable portion of the grate in the direction of movement ofthe same, in

the clinker above it.

"such a manner as to allow the tiltable portion consists in taperingfreely to be moved along a comparatively land 2 of the drawingssectional elevation and the grate which stationary part is constructedin the form of ordinary flat fire bars resting on the usualsupportingbars of the grate.

7 is the shaft of the tiltable portion 6 of the.

The bearings for the tiltable por- 8 serving as an abutment or thegreater weight of one of its with the fire hook on one arm 1 the sameuntil the centre of gravity has been shifted from the right hand side tothe left hand side of the tiltable portion 6 shown on the drawing, thetiltable portion then automatically continuing its movement into theopen position in which it is fixed by the rod or' pin 8 which now abutsagainst the right 1 hand side of the slot 9. When the tiltable ortion isin this position it is 0 en onboth sides relatively to the rotary sha 7to allow the clinker to be removed. The tiltable portion remains in thisopen position until it is returned into its closed position by strikingagainst the upper arm of the tiltable portion after the removal of theclinker.-

During the opening operation the tiltable portion of the grateessentially performs a sliding movement with respect to the clinkerabove it. This arrangement has the further advantage that when theWeight of the clinker above it is rather great the resistanceencountered by the shifting action exerted upon the tiltable portion ofthe grate is not so large as the said tiltable portion only performs asliding movement with respect to the clinker. The two end positions ofeach of the two @ti-ltable portions of the grate are determinedhythepinsS engag ng in the slot-s :9 pronided iin ti1B g1 21Jt'B. it ishowever, to Joe understood that the .tiltable portions-0t the grate maybestopped in their end positions :by bolts ior pins 10 provided on thestationary 1 art @of the grate ,1.

.T-he ainside sartaces of the stationary part of the grate which .it'aeethe .ti ltahle portions of the grate in :the direction (of the movementof the latter are tapered in such va manner as to allow the grate freelyto :he moved along .a oomparatitel y long are.

What .1 {claim is 1. A fnmace grate ifor fire boxes or fines of.looomotive boilers comprising in combination with a stationary part aportion capable of Joeinggvtilted, the centre of gravity of which iseccentric with respect {to its axis of notation and the Weightof whichis so {distri huted with :respect to the axis of rotation that for theopening operation a small movement willsufliceto cause-{the centre ofgravity to shift from the one to the other side of the axis of rotationand automatically complete the opening.

2. A furnace grate as claimed in claim 1 and in which the axis ofrotation of the tilt .ahle portions of the grate lies below the centreof gravity of the latter.

3. A furnace grate as claimed inclaim 1, having a rod for limiting theend position of the ztiltalole portion of the grate when .open.

.4. A 'tnrnace grate as claimed in claim 1, .and having .a ,rodforxlimiting the end position of the tilta-lole portion of the gratewhen iopenediand also its end position whenielosed.

5. A iturnacegrate as claimed in claim .1, and in which the tiltaloleportionof the grate .is constructed in the form of an arc and the,insidesurtaces of the .stationarypart of the grate which ,faoe thetiltable portions of the grate .are tapered so that during the openingoperation .the :said portion of the grate essentiallyperiormsa slidingmovement with respect to the clinker aho-ve it.

.In testimony whereof 'I have signed my name to this specification.

KOLOMAN REZSNY.

